# Capasso Group ## Welcome to the Capasso Group! ![Group photo April 2026](/sites/g/files/omnuum6306/files/2026-04/ACP_5630_01.jpg) ## Metalenz: the Harvard Capasso group start-up ![capasso.png](/sites/g/files/omnuum6306/files/styles/hwp_1_1__720x720_scale/public/capasso/files/capasso.png?itok=pMLoy-KO) **Read the** [**story**](https://news.harvard.edu/gazette/story/2022/08/can-tech-developed-at-harvard-disrupt-lens-making-industry/) **about Flat Optics, Professor Capasso, and Metalenz at the** [**Harvard Gazette**](https://news.harvard.edu/gazette/story/2022/08/can-tech-developed-at-harvard-disrupt-lens-making-industry/) **and his** [**interview with Nature Photonics**](https://doi.org/10.1038/s41566-022-01102-y) **on Metaoptics for the consumer market.** Metalenz and UMC will fabricate mass-market metasurfaces in Singapore ([Metalenz press release](https://metalenz.com/metalenz-launches-its-metasurface-optics-on-the-open-market-in-partnership-with-umc/), [Forbes article](https://www.forbes.com/sites/sabbirrangwala/2023/07/05/metalenz-pioneers-high-volume-semiconductor-foundry-based-lens-manufacturing/?sh=57cfa72223bd)). Find out more about Metalenz here: . Also see a press release from the [Harvard Office of Technology Development](https://otd.harvard.edu/news/harvards-metalens-technology-enters-commercial-development/), a [New York Times article](https://www.nytimes.com/2021/04/27/science/metamaterials-technology.html), [IEEE Spectrum](https://spectrum.ieee.org/metalens-2660294513), and an [SPIE news article](https://spie.org/news/photonics-focus/janfeb-2023/staking-a-claim-on-metalens-technology?SSO=1). ## Latest News [### Q-ing Up Better THz Sensors: guided-mode resonances in thin-film metagratings ](/news/2026/05/q-ing-better-thz-sensors-guided-mode-resonances-thin-film-metagratings) May 29, 2026 Detecting trace amounts of molecules—from explosives to biomarkers—requires highly sensitive sensors. Many molecules exhibit characteristic vibrational and rotational modes in the THz range, providing molecular fingerprints for label-free spectroscopic... ![Artistic rendering of high Q resonator and molecules](/sites/g/files/omnuum6306/files/styles/hwp_16_9__480x270/public/2026-05/sample_v27_ds_adj.png?itok=Du4CZjSV) [### Bright, stable frequency combs enabled by racetrack quantum cascade lasers ](/news/2026/04/bright-stable-frequency-combs-enabled-racetrack-quantum-cascade-lasers) April 07, 2026 Harvard researchers and collaborators at TU Wien have developed a racetrack-shaped quantum cascade laser that generates bright, stable mid-infrared frequency combs on a chip, opening a path toward compact dual-comb spectrometers for gas sensing and... ![Artistic rendering of QCL racetrack](/sites/g/files/omnuum6306/files/styles/hwp_16_9__480x270/public/2026-04/onering_v19hr_1800_300dpi.png?itok=1UgwMBT4) [### First demonstration of the structured Montgomery effect in free space ](/news/2026/01/first-demonstration-structured-montgomery-effect-free-space) January 30, 2026 In the latest publication from our group, Murat Yessenov and colleagues have experimentally demonstrated the Montgomery effect, a long-predicted optical phenomenon in which structured light repeatedly defocuses and refocuses in free space without lenses... ![Montgomery effect, artistic rendition](/sites/g/files/omnuum6306/files/styles/hwp_16_9__480x270/public/2026-01/montgomery_effect.png?itok=stTa7VYl) [### Special Issue of Nanophotonics in honor of Federico Capasso ](/news/2025/12/special-issue-nanophotonics-honor-federico-capasso) December 15, 2025 Nanophotonics has dedicated its latest special issue to Professor Federico Capasso, recognizing his pioneering work and his ongoing influence across the field. The issue features 47 invited papers from groups across the community, along with anecdotes and... ![Nanophotonics Vol 14 Issue 23 cover](/sites/g/files/omnuum6306/files/styles/hwp_16_9__480x270/public/2025-12/Skjermbilde%202025-12-15%20kl.%2014.54.38.png?itok=WGm1omxO) [### Graph‑Engineered Metasurface Packs Quantum Optics onto a Single Chip ](/news/2025/07/graph-engineered-metasurface-packs-quantum-optics-single-chip) July 27, 2025 Quantum photonics promises room‑temperature quantum computers and ultra‑secure networks, yet today’s systems still rely on bulky forests of lenses, mirrors, and beam splitters that are hard to scale. Kerolos M. A. Yousef and colleagues in the Capasso and... ![Artistic representation of quantum graphs](/sites/g/files/omnuum6306/files/styles/hwp_16_9__480x270/public/2025-07/quantum_graphs.png?itok=CdWmEpJE) [### Tunable Ring Laser Chips Broaden Mid-Infrared Wavelength Control ](/news/2025/07/tunable-ring-laser-chips-broaden-mid-infrared-wavelength-control) July 13, 2025 Tunable semiconductor lasers are vital for applications ranging from high-speed telecommunications to gas sensing and medical diagnostics, but existing devices face trade-offs in tuning range, accuracy, and complexity. Theodore P. Letsou, Johannes... ![Artistic rendering of tunable ring laser](/sites/g/files/omnuum6306/files/styles/hwp_16_9__480x270/public/2025-07/TINYRINGS13_hr_0.png?itok=F7Xx9Dlj) [ More arrow\_circle\_right ](/news) ## Recent Publications Download 10 citations download- [BibTeX](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=bibtex) - [EndNote X3 XML](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=endnote8) - [EndNote 7 XML](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=endnote7) - [Endnote tagged](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=tagged) - [Marc](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=marc) - [PubMedId](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=pubmed_id) - [RIS](/bibcite/export?pager_style=no_pager&number_of_items=10&sort_field=bibcite_year--desc&&content_filter%5B0%5D=1886001&content_filter%5B1%5D=1830786&content_filter%5B2%5D=1830781&content_filter%5B3%5D=1823056&content_filter%5B4%5D=1810471&content_filter%5B5%5D=1801851&content_filter%5B6%5D=1795371&content_filter%5B7%5D=1793791&content_filter%5B8%5D=1793041&content_filter%5B9%5D=1778081&&format=ris) ### 2024 Dainese, Marra, Cassara, Portes, Oh, Yang, Palmieri, JR Rodrigues, AH Dorrah, and F. Capasso. 2024. “[Shape Optimization for High Efficiency Metasurfaces: Theory and Implementation](/publications/shape-optimization-high-efficiency-metasurfaces-theory-and-implementation)”. Light: Science & Applications Dainese, Marra, Cassara, Portes, Oh, Yang, Palmieri, JR Rodrigues, AH Dorrah, and F. Capasso. 2024. “[Shape Optimization for High Efficiency Metasurfaces: Theory and Implementation](/publications/shape-optimization-high-efficiency-metasurfaces-theory-and-implementation)”. Light: Science & Applications - [ picture\_as\_pdflsa\_shapeoptimization.pdf](/sites/g/files/omnuum6306/files/lsa_shapeoptimization.pdf) - [ picture\_as\_pdflsa\_shapeoptimization.pdf](/sites/g/files/omnuum6306/files/lsa_shapeoptimization.pdf) Sydney Mason, Maryna Leonidivna Meretska, Christina Spägele, Marcus Ossiander, and Federico Capasso. 2024. “[Metasurface-Controlled Holographic Microcavities](/publications/metasurface-controlled-holographic-microcavities)”. ACS Photonics, 11, 3, Pp. 941-49. doi:10.1021/acsphotonics.3c01479 Sydney Mason, Maryna Leonidivna Meretska, Christina Spägele, Marcus Ossiander, and Federico Capasso. 2024. “[Metasurface-Controlled Holographic Microcavities](/publications/metasurface-controlled-holographic-microcavities)”. ACS Photonics, 11, 3, Pp. 941-49. doi:10.1021/acsphotonics.3c01479 - [ descriptionPublisher's Version](https://doi.org/10.1021/acsphotonics.3c01479) - [ picture\_as\_pdfmason-et-al-2024-metasurf...](/sites/g/files/omnuum6306/files/mason-et-al-2024-metasurface-controlled-holographic-microcavities-1.pdf) - [ descriptionPublisher's Version](https://doi.org/10.1021/acsphotonics.3c01479) - [ picture\_as\_pdfmason-et-al-2024-metasurf...](/sites/g/files/omnuum6306/files/mason-et-al-2024-metasurface-controlled-holographic-microcavities-1.pdf) Alfonso Palmieri, Ahmed H. Dorrah, Jun Yang, Jaewon Oh, Paulo Dainese, and Federico Capasso. 2024. “[Do Dielectric Bilayer Metasurfaces Behave As a Stack of Decoupled Single-Layer Metasurfaces?](/publications/do-dielectric-bilayer-metasurfaces-behave-stack-decoupled-single-layer)”. Opt. Express, 32, 5, Pp. 8146–8159. doi:10.1364/OE.505401 Alfonso Palmieri, Ahmed H. Dorrah, Jun Yang, Jaewon Oh, Paulo Dainese, and Federico Capasso. 2024. “[Do Dielectric Bilayer Metasurfaces Behave As a Stack of Decoupled Single-Layer Metasurfaces?](/publications/do-dielectric-bilayer-metasurfaces-behave-stack-decoupled-single-layer)”. Opt. Express, 32, 5, Pp. 8146–8159. doi:10.1364/OE.505401 - add\_circle\_outline do\_not\_disturb\_on Abstract - [ descriptionPublisher's Version](https://opg.optica.org/oe/abstract.cfm?URI=oe-32-5-8146) - [ picture\_as\_pdfoe-bilayer.pdf](/sites/g/files/omnuum6306/files/oe-bilayer.pdf) Flat optics or metasurfaces have opened new frontiers in wavefront shaping and its applications. Polarization optics is one prominent area which has greatly benefited from the shape-birefringence of metasurfaces. However, flat optics comprising a single... - [ descriptionPublisher's Version](https://opg.optica.org/oe/abstract.cfm?URI=oe-32-5-8146) - [ picture\_as\_pdfoe-bilayer.pdf](/sites/g/files/omnuum6306/files/oe-bilayer.pdf) Aun Zaidi, Noah A. Rubin, Maryna L. Meretska, Lisa W. Li, Ahmed H. Dorrah, Joon-Suh Park, and Federico Capasso. 2024. “[Metasurface-Enabled Single-Shot and Complete Mueller Matrix Imaging](/publications/metasurface-enabled-single-shot-and-complete-mueller-matrix-imaging)”. Nature Photonics. doi:10.1038/s41566-024-01426-x Aun Zaidi, Noah A. Rubin, Maryna L. Meretska, Lisa W. Li, Ahmed H. Dorrah, Joon-Suh Park, and Federico Capasso. 2024. “[Metasurface-Enabled Single-Shot and Complete Mueller Matrix Imaging](/publications/metasurface-enabled-single-shot-and-complete-mueller-matrix-imaging)”. Nature Photonics. doi:10.1038/s41566-024-01426-x - add\_circle\_outline do\_not\_disturb\_on Abstract - [ descriptionPublisher's Version](https://doi.org/10.1038/s41566-024-01426-x) - [ picture\_as\_pdfzaidi2024.pdf](/sites/g/files/omnuum6306/files/zaidi2024.pdf) When light scatters off an object, its polarization, in general, changes–-a transformation described by the object's Mueller matrix. Mueller matrix imaging is an important technique in science and technology to image the spatially varying polarization... - [ descriptionPublisher's Version](https://doi.org/10.1038/s41566-024-01426-x) - [ picture\_as\_pdfzaidi2024.pdf](/sites/g/files/omnuum6306/files/zaidi2024.pdf) Romain Quidant, William Aumiller, and Federico Capasso. 2024. “[An Interview With Federico Capasso](/publications/interview-federico-capasso)”. ACS Photonics, Pp. null. doi:10.1021/acsphotonics.4c00122 Romain Quidant, William Aumiller, and Federico Capasso. 2024. “[An Interview With Federico Capasso](/publications/interview-federico-capasso)”. ACS Photonics, Pp. null. doi:10.1021/acsphotonics.4c00122 - [ descriptionPublisher's Version](https://doi.org/10.1021/acsphotonics.4c00122) - [ descriptionPublisher's Version](https://doi.org/10.1021/acsphotonics.4c00122) Dmitry Kazakov, Nikola Opačak, Florian Pilat, Yongrui Wang, Alexey Belyanin, Benedikt Schwarz, and Federico Capasso. 2024. “[Cluster Synchronization in a Semiconductor Laser](/publications/cluster-synchronization-semiconductor-laser)”. APL Photonics, 9, 2, Pp. 026104. doi:10.1063/5.0187078 Dmitry Kazakov, Nikola Opačak, Florian Pilat, Yongrui Wang, Alexey Belyanin, Benedikt Schwarz, and Federico Capasso. 2024. “[Cluster Synchronization in a Semiconductor Laser](/publications/cluster-synchronization-semiconductor-laser)”. APL Photonics, 9, 2, Pp. 026104. doi:10.1063/5.0187078 - add\_circle\_outline do\_not\_disturb\_on Abstract - [ descriptionPublisher's Version](https://doi.org/10.1063/5.0187078) - [ picture\_as\_pdfkazakov2024\_aplphotonics....](/sites/g/files/omnuum6306/files/capasso/files/kazakov2024_aplphotonics.pdf) Cluster synchronization is a general phenomenon in a network of non-locally coupled oscillators. Here, we show that cluster synchronization occurs in semiconductor lasers, where the beat notes between the pairs of adjacent longitudinal modes of the laser... - [ descriptionPublisher's Version](https://doi.org/10.1063/5.0187078) - [ picture\_as\_pdfkazakov2024\_aplphotonics....](/sites/g/files/omnuum6306/files/capasso/files/kazakov2024_aplphotonics.pdf) Nikola Opačak, Dmitry Kazakov, Lorenzo L. Columbo, Maximilian Beiser, Theodore P. Letsou, Florian Pilat, Massimo Brambilla, Franco Prati, Marco Piccardo, Federico Capasso, and Benedikt Schwarz. 2024. “[Nozaki–Bekki Solitons in Semiconductor Lasers](/publications/nozaki%E2%80%93bekki-solitons-semiconductor-lasers)”. Nature, 625, 7996, Pp. 685–690. doi:10.1038/s41586-023-06915-7 Nikola Opačak, Dmitry Kazakov, Lorenzo L. Columbo, Maximilian Beiser, Theodore P. Letsou, Florian Pilat, Massimo Brambilla, Franco Prati, Marco Piccardo, Federico Capasso, and Benedikt Schwarz. 2024. “[Nozaki–Bekki Solitons in Semiconductor Lasers](/publications/nozaki%E2%80%93bekki-solitons-semiconductor-lasers)”. Nature, 625, 7996, Pp. 685–690. doi:10.1038/s41586-023-06915-7 - add\_circle\_outline do\_not\_disturb\_on Abstract - [ descriptionPublisher's Version](https://doi.org/10.1038/s41586-023-06915-7) - [ picture\_as\_pdfnozaki\_bekki\_optical\_soli...](/sites/g/files/omnuum6306/files/capasso/files/nozaki_bekki_optical_solitons.pdf) Optical frequency-comb sources, which emit perfectly periodic and coherent waveforms of light1, have recently rapidly progressed towards chip-scale integrated solutions. Among them, two classes are particularly significant–-semiconductor Fabry–Perót... - [ descriptionPublisher's Version](https://doi.org/10.1038/s41586-023-06915-7) - [ picture\_as\_pdfnozaki\_bekki\_optical\_soli...](/sites/g/files/omnuum6306/files/capasso/files/nozaki_bekki_optical_solitons.pdf) Dmitry Kazakov, Theodore P. Letsou, Maximilian Beiser, Yiyang Zhi, Nikola Opačak, Marco Piccardo, Benedikt Schwarz, and Federico Capasso. 2024. “[Active Mid-Infrared Ring Resonators](/publications/active-mid-infrared-ring-resonators)”. Nature Communications, 15, 1, Pp. 607. doi:10.1038/s41467-023-44628-7 Dmitry Kazakov, Theodore P. Letsou, Maximilian Beiser, Yiyang Zhi, Nikola Opačak, Marco Piccardo, Benedikt Schwarz, and Federico Capasso. 2024. “[Active Mid-Infrared Ring Resonators](/publications/active-mid-infrared-ring-resonators)”. Nature Communications, 15, 1, Pp. 607. doi:10.1038/s41467-023-44628-7 - add\_circle\_outline do\_not\_disturb\_on Abstract - [ descriptionPublisher's Version](https://doi.org/10.1038/s41467-023-44628-7) - [ picture\_as\_pdfactive\_midir\_ring\_resonat...](/sites/g/files/omnuum6306/files/capasso/files/s41467-023-44628-7.pdf) - [ picture\_as\_pdfactive\_midir\_ringres\_supp...](/sites/g/files/omnuum6306/files/capasso/files/active_midir_ringres_supplementary_information.pdf) High-quality optical ring resonators can confine light in a small volume and store it for millions of roundtrips. They have enabled the dramatic size reduction from laboratory scale to chip level of optical filters, modulators, frequency converters, and... - [ descriptionPublisher's Version](https://doi.org/10.1038/s41467-023-44628-7) - [ picture\_as\_pdfactive\_midir\_ring\_resonat...](/sites/g/files/omnuum6306/files/capasso/files/s41467-023-44628-7.pdf) - [ picture\_as\_pdfactive\_midir\_ringres\_supp...](/sites/g/files/omnuum6306/files/capasso/files/active_midir_ringres_supplementary_information.pdf) Joon-Suh Park, Soon Wei Daniel Lim, Arman Amirzhan, Hyukmo Kang, Karlene Karrfalt, Daewook Kim, Joel Leger, Augustine Urbas, Marcus Ossiander, Zhaoyi Li, and Federico Capasso. 2024. “[All-Glass 100 Mm Diameter Visible Metalens for Imaging the Cosmos](/publications/all-glass-100-mm-diameter-visible-metalens-imaging-cosmos)”. ACS Nano, 18, 4, Pp. 3187–3198. doi:10.1021/acsnano.3c09462 Joon-Suh Park, Soon Wei Daniel Lim, Arman Amirzhan, Hyukmo Kang, Karlene Karrfalt, Daewook Kim, Joel Leger, Augustine Urbas, Marcus Ossiander, Zhaoyi Li, and Federico Capasso. 2024. “[All-Glass 100 Mm Diameter Visible Metalens for Imaging the Cosmos](/publications/all-glass-100-mm-diameter-visible-metalens-imaging-cosmos)”. ACS Nano, 18, 4, Pp. 3187–3198. doi:10.1021/acsnano.3c09462 - [ descriptionPublisher's Version](https://pubs.acs.org/doi/10.1021/acsnano.3c09462) - [ picture\_as\_pdfd100mmmetalens\_supplement...](/sites/g/files/omnuum6306/files/capasso/files/d100mmmetalens_supplementaryinformation.pdf) - [ picture\_as\_pdfd100mmmetalens\_maintext\_r...](/sites/g/files/omnuum6306/files/capasso/files/d100mmmetalens_maintext_revised_final.pdf) - [ descriptionPublisher's Version](https://pubs.acs.org/doi/10.1021/acsnano.3c09462) - [ picture\_as\_pdfd100mmmetalens\_supplement...](/sites/g/files/omnuum6306/files/capasso/files/d100mmmetalens_supplementaryinformation.pdf) - [ picture\_as\_pdfd100mmmetalens\_maintext\_r...](/sites/g/files/omnuum6306/files/capasso/files/d100mmmetalens_maintext_revised_final.pdf) ### 2023 Rui Jie Tang, Soon Wei Daniel Lim, Marcus Ossiander, Xinghui Yin, and Federico Capasso. 2023. “[Time Reversal Differentiation of FDTD for Photonic Inverse Design](/publications/time-reversal-differentiation-fdtd-photonic-inverse-design)”. ACS Photonics, 10, 12, Pp. 4140-50. doi:10.1021/acsphotonics.3c00694 Rui Jie Tang, Soon Wei Daniel Lim, Marcus Ossiander, Xinghui Yin, and Federico Capasso. 2023. “[Time Reversal Differentiation of FDTD for Photonic Inverse Design](/publications/time-reversal-differentiation-fdtd-photonic-inverse-design)”. ACS Photonics, 10, 12, Pp. 4140-50. doi:10.1021/acsphotonics.3c00694 - [ descriptionPublisher's Version](https://pubs.acs.org/doi/10.1021/acsphotonics.3c00694) - [ picture\_as\_pdfddfdtd\_acsphotonics\_autho...](/sites/g/files/omnuum6306/files/capasso/files/ddfdtd_acsphotonics_authors_manuscript.pdf) - [ picture\_as\_pdfddfdtd\_acsphotonics\_suppl...](/sites/g/files/omnuum6306/files/capasso/files/ddfdtd_acsphotonics_supplementary.pdf) - [ descriptionPublisher's Version](https://pubs.acs.org/doi/10.1021/acsphotonics.3c00694) - [ picture\_as\_pdfddfdtd\_acsphotonics\_autho...](/sites/g/files/omnuum6306/files/capasso/files/ddfdtd_acsphotonics_authors_manuscript.pdf) - [ picture\_as\_pdfddfdtd\_acsphotonics\_suppl...](/sites/g/files/omnuum6306/files/capasso/files/ddfdtd_acsphotonics_supplementary.pdf) [ More arrow\_circle\_right ](/publications)